GWD-4-8求讲解

applejsjs · 发表于 2010-5-5 09:04:48

Q32:GWD-4-8不懂
From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent, and total consumption of poultry products there increased by 9.0 percent. During the same period, the population of Jurania increased by 6 percent, in part due to immigration to Jurania from other countries in the region.

If the statements above are true, which of the following must also be true on the basis of them?

A.   During the 1980’s in Jurania, profits of wholesale distributors of poultry products increased at a greater rate than did profits of wholesale distributors of fish.
B.   For people who immigrated to Jurania during the 1980’s, fish was less likely to be a major part of their diet than was poultry.
C.   In 1989 Juranians consumed twice as much poultry as fish.
D.   For a significant proportion of Jurania’s population, both fish and poultry products were a regular part of their diet during the 1980’s.
E.

er capita consumption of fish in Jurania was lower in 1989 than in 1980.
答案是E,我选的是B，想不通为什么E对，求解释

月落乌啼 · 发表于 2010-5-5 11:14:22

E其实很简单，同学可能忽略per capita 这个定语了。人均消费量，89年比80年总量才增加4.5%，分母的人口却增加了6%，除下来per capita consumption自然是小了

B不对是因为在人口增加中，只是in part因为移民，如果移民只占增加的1%，那销量的变化就不太可能是由他们的饮食习惯引起的了，也就不能反推了。

applejsjs · 发表于 2010-5-5 12:17:27

明白了，谢谢

tuftsv · 发表于 2010-8-3 16:04:13

还是觉得不太懂E 为什么可以特定年和特定年比较呢?
因为原文不是只说1980-1989这段期间是增加4.5%，可是它并没有说是哪一年阿
所以有可能1980增加12%但是1989年是负成长6%，其他年均零成长，所以整段期间是增加6%
这样的话怎么能说1989必定比1980年多呢?
能否请各位指点?

jczephyr · 发表于 2010-8-3 16:45:07

From 1980 to 1989, total consumption of fish in the country of Jurania increased by 4.5 percent，其实就是1980年和1989年做对比，1989年比1980年增加4.5%

GWD-4-8求讲解

GWD 4-8 求一個選項思路

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